Physics-informed reinforcement learning for motion control of a fish-like swimming robot

C Rodwell, P Tallapragada - Scientific Reports, 2023 - nature.com
Motion control of fish-like swimming robots presents many challenges due to the
unstructured environment and unmodelled governing physics of the fluid–robot interaction …

The Chaplygin sleigh with parametric excitation: chaotic dynamics and nonholonomic acceleration

IA Bizyaev, AV Borisov, IS Mamaev - Regular and Chaotic Dynamics, 2017 - Springer
This paper is concerned with the Chaplygin sleigh with time-varying mass distribution
(parametric excitation). The focus is on the case where excitation is induced by a material …

Swimming on limit cycles with nonholonomic constraints

B Pollard, V Fedonyuk, P Tallapragada - Nonlinear Dynamics, 2019 - Springer
The control and motion planning of bioinspired swimming robots is complicated by the fluid–
robot interaction, which is governed by a very high (infinite)-dimensional nonlinear system …

Autonomous unicycle: modeling, dynamics, and control

X Cao, DC Bui, D Takács, G Orosz - Multibody System Dynamics, 2024 - Springer
This article focuses on modeling and analyzing the dynamics of an autonomous unicycle.
The equations of motion of the nonholonomic multibody system are derived using the …

Fermi-like acceleration and power-law energy growth in nonholonomic systems

IA Bizyaev, AV Borisov, VV Kozlov, IS Mamaev - Nonlinearity, 2019 - iopscience.iop.org
This paper is concerned with a nonholonomic system with parametric excitation—the
Chaplygin sleigh with time-varying mass distribution. A detailed analysis is made of the …

Geometric-control formulation and averaging analysis of the unsteady aerodynamics of a wing with oscillatory controls

HE Taha, LP Olea, N Khalifa, C Gonzalez… - Journal of Fluid …, 2021 - cambridge.org
Differential-geometric-control theory represents a mathematically elegant combination of
differential geometry and control theory. Practically, it allows exploitation of nonlinear …

Sinusoidal control and limit cycle analysis of the dissipative Chaplygin sleigh

V Fedonyuk, P Tallapragada - Nonlinear Dynamics, 2018 - Springer
In this paper, we investigate the behavior of an underactuated mixed-dynamic
nonholonomic system, a Chaplygin sleigh, subjected to viscous dissipation and sinusoidal …

Parametric roll oscillations of a hydrodynamic Chaplygin sleigh

K Loya, P Tallapragada - Nonlinear Dynamics, 2023 - Springer
Biomimetic underwater robots use lateral periodic oscillatory motion to propel forward, which
is seen in most fishes known as body-caudal fin (BCF) propulsion. The lateral oscillatory …

Induced and tunable multistability due to nonholonomic constraints

C Rodwell, P Tallapragada - Nonlinear Dynamics, 2022 - Springer
Multistability is an area of interest in robotics and locomotion because the ability to achieve
multiple configurations or generate multiple gaits allows a single robotic or mechanical …

The dynamics of a Chaplygin sleigh with an elastic internal rotor

V Fedonyuk, P Tallapragada - Regular and Chaotic Dynamics, 2019 - Springer
In this paper the dynamics of a Chaplygin sleigh like system are investigated. The system
consists a of a Chaplygin sleigh with an internal rotor connected by a torsional spring, which …